NSK Europe, the European arm of Japanese bearing producer NSK, has developed deep groove ball bearings that don’t require exterior lubrication for use in submersible pumps handling cryogenic gases corresponding to hydrogen and LNG.
NSK has developed particular shaft bearings with a cage produced from self-lubricating fluoroplastic for submersible pumps that deal with cryogenic gases and liquids.
The stainless-steel bearings with a cage made from self-lubricating fluoroplastic are seeing rising adoption in submersible pumps as a growing variety of tasks promote using hydrogen as an energy source. These projects typically use particular submersible pumps that may reliably pump gaseous and liquid media in steady or intermittent operation at low temperatures all the method down to around -200°C.
In such pumps, the double bearing of the pump shaft is a important design component. เกจวัดแรงดันราคา is crucial, and no lubricant can be utilized apart from the media washing around the bearing. However, this places powerful calls for on the fabric pairing.
So NSK has developed a series of deep groove ball bearings specifically for these distinctive operating conditions, and several other key design features provide differentiation from typical pump bearings. For instance, the inside and outer rings are manufactured from a stainless steel tailored to the particular requirements of rolling bearings.
A stable cage that occupies the entire inside quantity of the bearing offers steerage for the rolling components (also manufactured from stainless steel), while the cage materials, a self-lubricating fluoroplastic, ensures low friction operating of the bearing without exterior lubrication. In addition, the high-performance fluoroplastic is extraordinarily wear-resistant and offers good low-temperature properties at speeds as a lot as 3600 rpm. The cage has a two-piece design, with the two halves joined by stainless steel rivets.
The NSK bearings can be found in numerous sizes (shaft diameter 30–100 mm) and are designed for use in both larger hydrogen pumping services and decentralised purposes, corresponding to hydrogen filling stations.